July 2010

CoRe in CiRM [6]

July 15, 2010 | xi'an

This is the last day at CiRM for our “research in pair” working on the new edition of Bayesian Core. I mostly completed the revision of the chapter on Bayesian imaging, including stuff on Markov random fields and mainly on ABC algorithms. All that remains to be done about this ...
[Read more...]

Anatomy of a Life-Milestone Announcement on Facebook

July 15, 2010 | Drew Conway

As I have mentioned, I recently returned for a lovely trip to Europe. While on vacation my brilliant, beautiful, funny, and all around perfect girlfriend accepted my invitation to be my wife. Pause for shared overwhelming feeling of joy… While I am still basking in the glow of being the ...
[Read more...]

Wanted: Big-data beta testers

July 15, 2010 | David Smith

We're nearing completion of the package of statistical tools for very large data sets that I gave an early preview of at R/Finance 2010. It will be released for Revolution R Enterprise later this year, but we're looking for some R users with big data sets to put the 1.0 version ... [Read more...]

R: a “Rock Star” for Business Intelligence

July 15, 2010 | David Smith

TDWI (The Data Warehousing Institute) recently published a comprehensive article about R and increasing level of activity around it from commercial organizations, including Revolution Analytics. The article opens with: In statistical circles, "R" is the name of an open source programming language for statistical analysis. These days, it might also ... [Read more...]

ggplot2 GSOC progress

July 15, 2010 | Tal Galili

(Written by Ian Fellows) The RForge build error has been fixed. the package can now be tried with: install.packages("Deducer",,"http://www.rforge.net",type="source") [Read more...]

Maps, Geocoding, and the R User Conference 2010

July 14, 2010 | C

The R User Conference 2010 is scheduled for July 20-23, 2010.  Wanna know where?Although there are more sophisticated methods of mapping with R the maps package makes mapping activities straightforward.  A bit of XML and Google...
[Read more...]

Creating a Presentation with LaTeX Beamer – Tables

July 14, 2010 | Ralph

Tables of information can be included in a LaTeX beamer presentation in the same way that they would be incorporated into any other LaTeX document. The tabular environment is used and, if necessary, the tables could be numbered but this probably doesn’t make as much sense as labelling and ...
[Read more...]

Revolution at useR! 2010

July 14, 2010 | David Smith

Revolution Analytics is a proud sponsor of this year's annual R user conference, useR! 2010, and many members of the Revolution team will be there at Gaithersburg next week. We'll be hosting a booth at the conference where you can come up and meet the team, and see some of the ... [Read more...]

Homicide in North America

July 14, 2010 | Diego Valle-Jones

I'm surprised by how similar the trends are (excluding the drug war in Mexico). There were big decreases in the homicide rate in all three countries starting in the early nineties, which then slowed down around 2000. The homicide rates for Mexicans ... [Read more...]

Short Open Source Q&A with Revolution Analytics

July 14, 2010 | Matt Shotwell

I recently e-mailed David Smith of Revolution Analytics with a few questions about their relationship with the R-project, and how they handle R‘s source code. David mentioned, and I’m flattered that my email motivated an additional page on the Revolution website. Beyond this, I have no other relationship ... [Read more...]

Multidimension bridge sampling (CoRe in CiRM [5])

July 13, 2010 | xi'an

Since Bayes factor approximation is one of my areas of interest, I was intrigued by Xiao-Li Meng’s comments during my poster in Benidorm that I was using the “wrong” bridge sampling estimator when trying to bridge two models of different dimensions, based on the completion (for and missing from ... [Read more...]

House Data: 41k finance summaries from 2200 candidates

July 13, 2010 | jjh

I’d like to announce a new project by Offensive Politics called House Data, launching today. House Data is a large-scale extract of FEC Form 3 Summary of receipts of disbursements (pdf warning) of every US House campaign from mid-2001 onward. The traditional source for campaign finance summaries is the Candidate ... [Read more...]

Norman Nie on Internet Evolution radio

July 13, 2010 | David Smith

Revolution CEO Norman Nie just recorded a live podcast with Terry Sweeney of Internet Evolution Radio. In the 30-minute interview, Norman talked about the history of R, his time with SPSS, development plans for Revolution R, and how predictive analytics is impacting businesses, the Web, and even political opinion. You ... [Read more...]

Area Plots with Intensity Coloring

July 13, 2010 | Allan Engelhardt

I am not sure apeescape’s ggplot2 area plot with intensity colouring is really the best way of presenting the information, but it had me intrigued enough to replicate it using base R graphics. The key technique is to draw a gradient line which R does not support natively so ... [Read more...]

A quantum leap (CoRe in CiRM [4])

July 12, 2010 | xi'an

Today, as I was trying to install SpatialEpi to use the Scotland lip cancer data in the last chapter of Bayesian Core, I realised my version of R, R Version 2.6.1, was hopelessly out of date! As I am also using Hardy Heron, a somehow antiquated version of Ubuntu on my ...
[Read more...]

Charting the World Cup

July 12, 2010 | David Smith

Now that Spain has won the World Cup, it's interesting to go back and look at some metrics from the matches and see if we can tease out what characteristics made for a winning Cup team this time around. Fortunately, the Guardian's Data Blog has made a wealth of World ... [Read more...]

Example 8.2: Digits of Pi, redux

July 12, 2010 | Ken Kleinman

In example 8.1, we considered some simple tests for the randomness of the digits of Pi. Here we develop a different test and implement it. If each digit appears in each place with equal and independent probability, then the places between recurrences...
[Read more...]
1 4 5 6 7 8 9

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)